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1 #ifndef _ASM_INTEL_DS_H
2 #define _ASM_INTEL_DS_H
3
4 #include <linux/percpu-defs.h>
5
6 #define BTS_BUFFER_SIZE         (PAGE_SIZE << 4)
7 #define PEBS_BUFFER_SIZE        (PAGE_SIZE << 4)
8
9 /* The maximal number of PEBS events: */
10 #define MAX_PEBS_EVENTS_FMT4    8
11 #define MAX_PEBS_EVENTS         32
12 #define MAX_PEBS_EVENTS_MASK    GENMASK_ULL(MAX_PEBS_EVENTS - 1, 0)
13 #define MAX_FIXED_PEBS_EVENTS   16
14
15 /*
16  * A debug store configuration.
17  *
18  * We only support architectures that use 64bit fields.
19  */
20 struct debug_store {
21         u64     bts_buffer_base;
22         u64     bts_index;
23         u64     bts_absolute_maximum;
24         u64     bts_interrupt_threshold;
25         u64     pebs_buffer_base;
26         u64     pebs_index;
27         u64     pebs_absolute_maximum;
28         u64     pebs_interrupt_threshold;
29         u64     pebs_event_reset[MAX_PEBS_EVENTS + MAX_FIXED_PEBS_EVENTS];
30 } __aligned(PAGE_SIZE);
31
32 DECLARE_PER_CPU_PAGE_ALIGNED(struct debug_store, cpu_debug_store);
33
34 struct debug_store_buffers {
35         char    bts_buffer[BTS_BUFFER_SIZE];
36         char    pebs_buffer[PEBS_BUFFER_SIZE];
37 };
38
39 #endif
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